Year	% of total population
1960	13.700638671924423
1961	13.994317299201514
1962	14.284469363793518
1963	14.590500276441068
1964	14.907719677832164
1965	15.233590374690978
1966	15.561611012562262
1967	15.912160410107411
1968	16.272412124970998
1969	16.644365235861084
1970	17.019260047087766
1971	17.442178850406275
1972	17.87154940006539
1973	18.29575910054212
1974	18.724683476551473
1975	18.86517917452721
1976	19.334742107323795
1977	19.80446767328499
1978	20.284999738794863
1979	20.742092676246724
1980	21.2367147308605
1981	21.711163118103276
1982	22.06690206220673
1983	22.440432125955322
1984	22.843528284311986
1985	23.270266139544788
1986	23.705670511841934
1987	24.143727280146763
1988	24.581473268017938
1989	25.01019592622228
1990	25.44026207668213
1991	25.8043258217577
1992	26.148417041009726
1993	26.487310125240796
1994	26.833484610521865
1995	27.17330000646687
1996	27.488667914428106
1997	27.816339215344293
1998	28.147961898502547
1999	28.471812382100715
2000	28.80739436548468
2001	29.20743332995563
2002	29.614298133293012
2003	30.02004296974116
2004	30.43245428056042
2005	30.85730168073228
2006	31.293722911434205
2007	31.716364114040292
2008	32.185588724689524
2009	32.65136535656432
2010	33.12977050461909
2011	33.580717663265766
2012	34.00922117728997
2013	34.432109173029495
2014	34.863800137433216
2015	35.33402144811682
2016	35.81655133729875
2017	36.30625524675251
2018	36.80307121830228
2019	37.307524928711835
2020	37.815087729817066
2021	38.32563718504343
2022	38.85018433171039
2023	39.38762351090931